Analysis of Material Effect on Rail Impedance
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In this paper, two different solid iron materials are used for two different size rails. The internal impedances, resistances and inductances of the rails are evaluated and analyzed with time harmonic and time stepping finite element methods. Two solid iron materials have different B-H curves and electrical conductivities. The analysis will be presented for different currents at different frequencies, 10 Hz - 10 kHz. The inductance analysis using finite element method is also performed under simultaneous large DC signal and small AC signal.
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